This is so cool! It's an AT-AT Imperial Walker snow sculpture big enough and solid enough for a kid to sit on and ride. Here's a note from the guy who built it, Miguel Valenzuela.
My daughter sitting on top of an AT-AT Snow Sculpture. It's about 4 feet tall (1.2 meters). I know the main canons are a bit big but anything smaller just wasn't holding or showing up. I built it over a period of two days. About 3 hours the first day then one hour the second day. By leaving it overnight it helped freeze the top layer making it stronger.